Computer Drive User Manual

12 Cheetah NS 10K.2 FC Product Manual, Rev. B
4.2.2 Format command execution time (minutes)
ST3600002FC ST3450802FC ST3300602FC
Maximum (with verify) 182 129 83
Maximum (without verify) 101 68 43
Execution time measured from receipt of the last byte of the
Command Descriptor Block (CDB) to the request
for a Status Byte Transfer to the Initiator (excluding connect/disconnect).
When changing sector sizes, the format times shown above may need to be increased by 30 minutes.
4.2.3 General performance characteristics
Sustainable disk transfer rate*:
Minimum 82 Mbytes/sec
Maximum 150 Mbytes/sec
Fibre Channel Interface maximum instantaneous transfer rate 800 Mbytes/sec* per port
(dual port = 1600 Mbytes/sec*)
Logical block sizes
Default is 512-byte data blocks
Sector sizes variable to 512, 520, 524 and 528 bytes.
Read/write consecutive sectors on a track Ye s
Flaw reallocation performance impact (for flaws reallocated at format time
using the spare sectors per sparing zone reallocation scheme.)
Negligible
*Assumes no errors and no relocated logical blocks. Rate measured
from the start of the first logical block transfer to or
from the host.
4.3 Start/stop time
The drive accepts the commands listed in the Fibre Channel Interface Manual less than 3 seconds after DC
power has been applied.
If the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START
STOP UNIT command with the START bit equal to 0, the drive becomes ready for normal operations within 30
seconds (excluding the error recovery procedure).
If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a NOTIFY
(ENABLE SPINUP) primitive, the drive waits for a START STOP UNIT command with the START bit equal to 1.
After receiving a START STOP UNIT command with the START bit equal to 1, the drive waits for a NOTIFY
(ENABLE SPINUP) primitive. After receiving a NOTIFY (ENABLE SPINUP) primitive through either port, the
drive becomes ready for normal operations within 30 seconds (excluding the error recovery procedure).
If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does
not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT
command.
The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 30 sec-
onds (maximum) from removal of DC power.
There is no power control switch on the drive.